upload android base code part3

android/bootable/recovery/roots.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RECOVERY_ROOTS_H_
+#define RECOVERY_ROOTS_H_
+
+typedef struct fstab_rec Volume;
+
+// Load and parse volume data from /etc/recovery.fstab.
+void load_volume_table();
+
+// Return the Volume* record for this path (or NULL).
+Volume* volume_for_path(const char* path);
+
+// Make sure that the volume 'path' is on is mounted.  Returns 0 on
+// success (volume is mounted).
+int ensure_path_mounted(const char* path);
+
+// Similar to ensure_path_mounted, but allows one to specify the mount_point.
+int ensure_path_mounted_at(const char* path, const char* mount_point);
+
+// Make sure that the volume 'path' is on is unmounted.  Returns 0 on
+// success (volume is unmounted);
+int ensure_path_unmounted(const char* path);
+
+// Reformat the given volume (must be the mount point only, eg
+// "/cache"), no paths permitted.  Attempts to unmount the volume if
+// it is mounted.
+int format_volume(const char* volume);
+
+// Reformat the given volume (must be the mount point only, eg
+// "/cache"), no paths permitted.  Attempts to unmount the volume if
+// it is mounted.
+// Copies 'directory' to root of the newly formatted volume
+int format_volume(const char* volume, const char* directory);
+
+// Ensure that all and only the volumes that packages expect to find
+// mounted (/tmp and /cache) are mounted.  Returns 0 on success.
+int setup_install_mounts();
+
+#endif  // RECOVERY_ROOTS_H_